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Homework Help: HELP i cant think of the formula!

  1. Sep 20, 2011 #1
    HELP!!! i cant think of the formula!

    1. The problem statement, all variables and given/known data

    A 0,05kg golf ball is driven from the tee at a speed of 80m/s. if the average accelerating force on the ball is 6500N, determine how long the clubhead is in contact with the ball.

    2. Relevant equations



    3. The attempt at a solution

    I have sat staring at this question for awhile. could somebody please help me out so i can substitute...?
     
  2. jcsd
  3. Sep 20, 2011 #2
    Re: HELP!!! i cant think of the formula!

    Have you heard of the law of Impulses?
    It states that: [tex] \Delta{\vec{p}} = \overline{\vec{F}}\Delta{t} [/tex]
    Try it.
    Where dP is the change in momentum, and F is the average force...
    Daniel
     
  4. Sep 20, 2011 #3
    Re: HELP!!! i cant think of the formula!

    Thank you

    What would Δp⃗ be?
     
    Last edited: Sep 20, 2011
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